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Shiyang Ruan e900ba10d1 fsdax: dedupe should compare the min of two iters' length 
In an dedupe comparison iter loop, the length of iomap_iter decreases
because it implies the remaining length after each iteration.

The dedupe command will fail with -EIO if the range is larger than one 
page size and not aligned to the page size.  Also report warning in dmesg:

[ 4338.498374] ------------[ cut here ]------------
[ 4338.498689] WARNING: CPU: 3 PID: 1415645 at fs/iomap/iter.c:16 
...

The compare function should use the min length of the current iters,
not the total length.

Link: https://lkml.kernel.org/r/1679469958-2-1-git-send-email-ruansy.fnst@fujitsu.com
Fixes: 0e79e3736d54 ("fsdax: dedupe: iter two files at the same time")
Signed-off-by: Shiyang Ruan <ruansy.fnst@fujitsu.com>
Reviewed-by: Darrick J. Wong <djwong@kernel.org>
Cc: Dan Williams <dan.j.williams@intel.com>
Cc: Jan Kara <jack@suse.cz>
Cc: Matthew Wilcox (Oracle) <willy@infradead.org>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
2023-03-28 15:24:32 -07:00
..
9p
9p patches for 6.3 merge window (part 1)
2023-03-01 08:52:49 -08:00
adfs
fs: port ->setattr() to pass mnt_idmap
2023-01-19 09:24:02 +01:00
affs
for-6.3/dio-2023-02-16
2023-02-20 14:10:36 -08:00
afs
- Daniel Verkamp has contributed a memfd series ("mm/memfd: add
2023-02-23 17:09:35 -08:00
autofs
fs: port ->permission() to pass mnt_idmap
2023-01-19 09:24:28 +01:00
befs
befs: Convert befs_symlink_read_folio() to use a folio
2022-08-02 12:34:03 -04:00
bfs
fs: port inode_init_owner() to mnt_idmap
2023-01-19 09:24:28 +01:00
btrfs
for-6.3-rc3-tag
2023-03-24 08:32:10 -07:00
cachefiles
fs: port ->permission() to pass mnt_idmap
2023-01-19 09:24:28 +01:00
ceph
Two small fixes from Xiubo and myself, marked for stable.
2023-03-02 10:48:30 -08:00
cifs
smb3: fix unusable share after force unmount failure
2023-03-24 14:37:12 -05:00
coda
hardening updates for v6.3-rc1
2023-02-21 11:07:23 -08:00
configfs
fs: port ->permission() to pass mnt_idmap
2023-01-19 09:24:28 +01:00
cramfs
fs/cramfs/inode.c: initialize file_ra_state
2023-03-02 21:54:23 -08:00
crypto
fscrypt: check for NULL keyring in fscrypt_put_master_key_activeref()
2023-03-18 21:08:03 -07:00
debugfs
ARM: SoC drivers for 6.3
2023-02-27 10:04:49 -08:00
devpts
…
dlm
Driver core changes for 6.3-rc1
2023-02-24 12:58:55 -08:00
ecryptfs
This update includes the following changes:
2023-02-21 18:10:50 -08:00
efivarfs
A healthy mix of EFI contributions this time:
2023-02-23 14:41:48 -08:00
efs
…
erofs
erofs: use wrapper i_blocksize() in erofs_file_read_iter()
2023-03-09 23:36:04 +08:00
exfat
Description for this pull request:
2023-03-01 08:42:27 -08:00
exportfs
fs: port ->permission() to pass mnt_idmap
2023-01-19 09:24:28 +01:00
ext2
for-6.3/dio-2023-02-16
2023-02-20 14:10:36 -08:00
ext4
ext4: fix possible double unlock when moving a directory
2023-03-17 21:53:52 -04:00
f2fs
f2fs-for-6.3-rc1
2023-02-27 16:18:51 -08:00
fat
There is no particular theme here - mainly quick hits all over the tree.
2023-02-23 17:55:40 -08:00
freevxfs
There is no particular theme here - mainly quick hits all over the tree.
2023-02-23 17:55:40 -08:00
fscache
fscache: Use clear_and_wake_up_bit() in fscache_create_volume_work()
2023-01-30 12:51:54 +00:00
fuse
fuse update for 6.3
2023-02-27 09:53:58 -08:00
gfs2
Reinstate "GFS2: free disk inode which is deleted by remote node -V2"
2023-03-23 19:37:56 +01:00
hfs
There is no particular theme here - mainly quick hits all over the tree.
2023-02-23 17:55:40 -08:00
hfsplus
fs: hfsplus: fix UAF issue in hfsplus_put_super
2023-03-02 21:54:23 -08:00
hostfs
This pull request contains the following changes for UML:
2023-03-01 09:13:00 -08:00
hpfs
fs: port ->rename() to pass mnt_idmap
2023-01-19 09:24:26 +01:00
hugetlbfs
- Daniel Verkamp has contributed a memfd series ("mm/memfd: add
2023-02-23 17:09:35 -08:00
iomap
- Daniel Verkamp has contributed a memfd series ("mm/memfd: add
2023-02-23 17:09:35 -08:00
isofs
- hfs and hfsplus kmap API modernization from Fabio Francesco
2022-10-12 11:00:22 -07:00
jbd2
Bug fixes and regressions for ext4, the most serious of which is a
2023-03-12 08:55:55 -07:00
jffs2
This pull request contains updates for JFFS2, UBI and UBIFS
2023-03-01 09:06:51 -08:00
jfs
Just one simple sanity check
2023-03-01 08:47:19 -08:00
kernfs
Driver core changes for 6.3-rc1
2023-02-24 12:58:55 -08:00
ksmbd
ksmbd: return unsupported error on smb1 mount
2023-03-24 00:23:13 -05:00
lockd
lockd: set file_lock start and end when decoding nlm4 testargs
2023-03-14 14:00:55 -04:00
minix
Merge branch 'work.minix' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
2023-02-24 19:01:15 -08:00
netfs
iov: Fix netfs_extract_user_to_sg()
2023-03-01 18:18:25 -06:00
nfs
nfsd-6.3 fixes:
2023-03-21 14:48:38 -07:00
nfs_common
filelock: move file locking definitions to separate header file
2023-01-11 06:52:32 -05:00
nfsd
nfsd-6.3 fixes:
2023-03-21 14:48:38 -07:00
nilfs2
nilfs2: fix kernel-infoleak in nilfs_ioctl_wrap_copy()
2023-03-23 17:18:32 -07:00
nls
…
notify
RCU pull request for v6.3
2023-02-21 10:45:51 -08:00
ntfs
There is no particular theme here - mainly quick hits all over the tree.
2023-02-23 17:55:40 -08:00
ntfs3
- Daniel Verkamp has contributed a memfd series ("mm/memfd: add
2023-02-23 17:09:35 -08:00
ocfs2
ocfs2: fix data corruption after failed write
2023-03-07 17:04:55 -08:00
omfs
fs: port inode_init_owner() to mnt_idmap
2023-01-19 09:24:28 +01:00
openpromfs
…
orangefs
- Daniel Verkamp has contributed a memfd series ("mm/memfd: add
2023-02-23 17:09:35 -08:00
overlayfs
fs.idmapped.v6.3
2023-02-20 11:53:11 -08:00
proc
capability: just use a 'u64' instead of a 'u32[2]' array
2023-03-01 10:01:22 -08:00
pstore
pstore updates for v6.2-rc1-fixes
2022-12-23 11:55:54 -08:00
qnx4
…
qnx6
fs/qnx6: delete unnecessary checks before brelse()
2022-09-11 21:55:07 -07:00
quota
RCU pull request for v6.3
2023-02-21 10:45:51 -08:00
ramfs
- Daniel Verkamp has contributed a memfd series ("mm/memfd: add
2023-02-23 17:09:35 -08:00
reiserfs
- Daniel Verkamp has contributed a memfd series ("mm/memfd: add
2023-02-23 17:09:35 -08:00
romfs
mm/nommu: factor out check for NOMMU shared mappings into is_nommu_shared_mapping()
2023-01-18 17:12:56 -08:00
smbfs_common
smb3: Replace smb2pdu 1-element arrays with flex-arrays
2023-02-20 17:25:43 -06:00
squashfs
revert "squashfs: harden sanity check in squashfs_read_xattr_id_table"
2023-02-03 17:52:25 -08:00
sysfs
…
sysv
Merge branch 'work.sysv' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
2023-02-24 19:03:26 -08:00
tracefs
fs: port ->mkdir() to pass mnt_idmap
2023-01-19 09:24:26 +01:00
ubifs
This pull request contains updates for JFFS2, UBI and UBIFS
2023-03-01 09:06:51 -08:00
udf
udf: Warn if block mapping is done for in-ICB files
2023-03-06 16:38:25 +01:00
ufs
fs: port inode_init_owner() to mnt_idmap
2023-01-19 09:24:28 +01:00
unicode
…
vboxsf
fs: port ->rename() to pass mnt_idmap
2023-01-19 09:24:26 +01:00
verity
fsverity: don't drop pagecache at end of FS_IOC_ENABLE_VERITY
2023-03-15 22:50:41 -07:00
xfs
xfs: fix mismerged tracepoints
2023-03-24 13:16:01 -07:00
zonefs
zonefs: Fix error message in zonefs_file_dio_append()
2023-03-21 06:36:43 +09:00
aio.c
Merge branch 'mm-hotfixes-stable' into mm-stable
2023-02-10 15:34:48 -08:00
anon_inodes.c
dynamic_dname(): drop unused dentry argument
2022-08-20 11:34:04 -04:00
attr.c
fs.idmapped.v6.3
2023-02-20 11:53:11 -08:00
bad_inode.c
fs: port ->permission() to pass mnt_idmap
2023-01-19 09:24:28 +01:00
binfmt_elf_fdpic.c
elfcore: Add a cprm parameter to elf_core_extra_{phdrs,data_size}
2023-01-05 15:12:12 +00:00
binfmt_elf_test.c
…
binfmt_elf.c
Linux 6.2-rc6
2023-01-31 15:01:20 +01:00
binfmt_flat.c
…
binfmt_misc.c
binfmt_misc: fix shift-out-of-bounds in check_special_flags
2022-12-02 13:57:04 -08:00
binfmt_script.c
…
buffer.c
- Daniel Verkamp has contributed a memfd series ("mm/memfd: add
2023-02-23 17:09:35 -08:00
char_dev.c
chardev: fix error handling in cdev_device_add()
2022-12-02 17:48:59 +01:00
compat_binfmt_elf.c
…
coredump.c
- Daniel Verkamp has contributed a memfd series ("mm/memfd: add
2023-02-23 17:09:35 -08:00
d_path.c
d_path.c: typo fix...
2022-08-20 11:34:33 -04:00
dax.c
fsdax: dedupe should compare the min of two iters' length
2023-03-28 15:24:32 -07:00
dcache.c
tmpfile API change
2022-10-10 19:45:17 -07:00
direct-io.c
fs: move sb_init_dio_done_wq out of direct-io.c
2023-01-26 10:30:56 -07:00
drop_caches.c
…
eventfd.c
eventfd: provide a eventfd_signal_mask() helper
2022-11-22 06:07:55 -07:00
eventpoll.c
eventpoll: add EPOLL_URING_WAKE poll wakeup flag
2022-11-21 07:45:29 -07:00
exec.c
- Daniel Verkamp has contributed a memfd series ("mm/memfd: add
2023-02-23 17:09:35 -08:00
fcntl.c
fs.idmapped.v6.3
2023-02-20 11:53:11 -08:00
fhandle.c
do_sys_name_to_handle(): constify path
2022-09-01 17:36:39 -04:00
file_table.c
filelock: move file locking definitions to separate header file
2023-01-11 06:52:32 -05:00
file.c
fs: prevent out-of-bounds array speculation when closing a file descriptor
2023-03-09 22:46:21 -05:00
filesystems.c
…
fs_context.c
…
fs_parser.c
ext4: journal_path mount options should follow links
2022-12-01 10:46:54 -05:00
fs_pin.c
…
fs_struct.c
…
fs_types.c
…
fs-writeback.c
mm: convert mem_cgroup_css_from_page() to mem_cgroup_css_from_folio()
2023-02-02 22:33:19 -08:00
fsopen.c
…
init.c
fs: port ->permission() to pass mnt_idmap
2023-01-19 09:24:28 +01:00
inode.c
fs.idmapped.v6.3
2023-02-20 11:53:11 -08:00
internal.h
for-6.3/dio-2023-02-16
2023-02-20 14:10:36 -08:00
ioctl.c
fs: port inode_owner_or_capable() to mnt_idmap
2023-01-19 09:24:29 +01:00
Kconfig
fs: build the legacy direct I/O code conditionally
2023-01-26 10:30:56 -07:00
Kconfig.binfmt
Xtensa updates for v6.1
2022-10-10 14:21:11 -07:00
kernel_read_file.c
…
libfs.c
fs.idmapped.v6.3
2023-02-20 11:53:11 -08:00
locks.c
filelocks: use mount idmapping for setlease permission check
2023-03-09 22:36:12 +01:00
Makefile
for-6.3/dio-2023-02-16
2023-02-20 14:10:36 -08:00
mbcache.c
ext4: fix deadlock due to mbcache entry corruption
2022-12-08 21:49:25 -05:00
mnt_idmapping.c
fs: move mnt_idmap
2023-01-19 09:24:30 +01:00
mount.h
…
mpage.c
- Daniel Verkamp has contributed a memfd series ("mm/memfd: add
2023-02-23 17:09:35 -08:00
namei.c
NFSD 6.3 Release Notes
2023-02-22 14:21:40 -08:00
namespace.c
Merge branch 'work.namespace' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
2023-02-24 19:20:07 -08:00
no-block.c
…
nsfs.c
nsfs: repair kernel-doc for ns_match()
2023-01-11 15:47:40 -05:00
open.c
vfs: avoid duplicating creds in faccessat if possible
2023-02-27 16:39:19 -08:00
pipe.c
dynamic_dname(): drop unused dentry argument
2022-08-20 11:34:04 -04:00
pnode.c
pnode: terminate at peers of source
2022-12-21 14:45:25 +01:00
pnode.h
…
posix_acl.c
fs.acl.v6.3
2023-02-20 12:14:33 -08:00
proc_namespace.c
…
read_write.c
iov_iter work; most of that is about getting rid of
2022-12-12 18:29:54 -08:00
readdir.c
Change calling conventions for filldir_t
2022-08-17 17:25:04 -04:00
remap_range.c
fs: port i_{g,u}id_into_vfs{g,u}id() to mnt_idmap
2023-01-19 09:24:29 +01:00
select.c
…
seq_file.c
use less confusing names for iov_iter direction initializers
2022-11-25 13:01:55 -05:00
signalfd.c
…
splice.c
splice: Remove redundant assignment to ret
2023-03-09 10:10:31 +01:00
stack.c
…
stat.c
fs.idmapped.v6.3
2023-02-20 11:53:11 -08:00
statfs.c
…
super.c
fscrypt: destroy keyring after security_sb_delete()
2023-03-14 10:30:30 -07:00
sync.c
…
sysctls.c
…
timerfd.c
…
userfaultfd.c
mm: replace vma->vm_flags direct modifications with modifier calls
2023-02-09 16:51:39 -08:00
utimes.c
fs.idmapped.v6.3
2023-02-20 11:53:11 -08:00
xattr.c
fs.idmapped.v6.3
2023-02-20 11:53:11 -08:00